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Proceedings Paper

Surface free energy of polyimide aligning layers
Author(s): Jerzy Borycki; Malgorzata Okulska-Bozek
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Paper Abstract

Polyimides from four selected dianhydrides and seven diamines were synthesized by two-step polycondensation method. During the first step 10% solutions of poly(amic acid)s in N,N-dimethylformamide and 1-methyl-2-pyrrolidinone were obtained. The thin polyimide layers on soda glass were prepared by thermal cyclodehydration. Contact angles of series of standard liquids for tested polyimide films were measured. The values of surface free energy and its components were calculated accordingly to Zisman, Owens et al. and van Oss equations. Some correlation between the surface properties and the chemical structure of polyimide aligning layers were presented.

Paper Details

Date Published: 12 May 2000
PDF: 4 pages
Proc. SPIE 4147, Liquid Crystals: Chemistry, Physics, and Applications, (12 May 2000); doi: 10.1117/12.385696
Show Author Affiliations
Jerzy Borycki, Radom Technical Univ. (Poland)
Malgorzata Okulska-Bozek, Radom Technical Univ. (Poland)

Published in SPIE Proceedings Vol. 4147:
Liquid Crystals: Chemistry, Physics, and Applications
Stanislaw J. Klosowicz; Jolanta Rutkowska; Jerzy Zielinski; Jozef Zmija, Editor(s)

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